A square hollow bar having an outside dimension of 250 mm by 250 mm with 6 mm thick is to be replaced by a soild circular bar. a. Determine the required diameter of bar so that the maximum shear stress in the bar will not exceed the maximum shear stress in the tube. b. If the computed value of diameter in the previous question increase by 15%, what is the new shear stress of the circular bar? c. Determine the angle of twist in degrees of the tube if the length of the tube is 1m and the shear modulus is 80 GPa. Use T=14 kN-m.

A square hollow bar having an outside dimension of 250 mm by 250 mm with 6 mm thick is to be replaced by a soild circular bar. a. Determine the required diameter of bar so that the maximum shear stress in the bar will not exceed the maximum shear stress in the tube. b. If the computed value of diameter in the previous question increase by 15%, what is the new shear stress of the circular bar? c. Determine the angle of twist in degrees of the tube if the length of the tube is 1m and the shear modulus is 80 GPa. Use T=14 kN-m.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.5.11P: The hollow drill pipe for an oil well (sec figure) is 6,2 in. in outer diameter and 0.75 in. in...

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